Knife



N. P. NIELSEN.

KNIFE. No. 477,817. Patented June 28, 1892.

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' UNITED STATES Y PATENT OFFI E.

NiELs'P. NIELSEN, or TERRE IIAUTE, INDIANA.

KNIFE.

SPECIFICATION forming part of Letters Patent No. 477,817,dated-11111828, 1892- Application filed March 25, 1892.

To all whom it may concern:

Be it known that I, NIELs P. NIELSEN, a citizen of the United States,residing at Terre Haute, in the county of Vigo and State of I11- diana,have invented certain new and useful Improvements inHorseshoeing-Knives; and I' do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to the class of knives illustrated and described inmy former Letters Patent, No. 443,534, dated December 30, 1890, and hasfor its object to cheapen and improve the construction therein setforth, my present invention being a simplifying and carrying forward ofthe idea disclosed in my said former patent.

With these ends in View I have devised the novel construction which Iwill now describe, referring by letters and numbers to the accompanyingdrawings, forming part of this specification, in which Figure 1 is aview of my novel knife, a blade being locked in position in the handle;Fig. 2, a View in the position shown in Fig. 1, the outer half of thehandle being removed and the blade being of a different size from thatin Fig. 1; Fig. 3, a view of the outer half of the handle, as shown inFig. 1, inverted; Fig. 4, a view of the smallest-sized blade detached;and Fig. 5 is a longitudinal section of the knife complete, showing themanner in which a blade is locked in position.

A and B denote the two halves of the handle, which in practice arepreferably cast, and are held together by rivets 1. Part A of the handleis provided with an outwardly-flaring socket 2, adapted to receive thetang of a blade, said socket being preferably undercut at the sides toform ways, as indicated in Fig. 2, so that in practice the blade is heldfirmly in position by the solid metal of partA which surrounds thesocket. Part B of the handle is a mere shell, being made as light as isconsistent with the proper amount of strength, a cross-piece 3 beingprovided at the point where the rivets pass through, so as to give thegreatest possible strength to this portion Serial No. 426.346. (N0model.)

of the knife. Part B of the handle is also provided with lugs 4, whichengage the inner side of part Aand act to take strain from the rivets bypreventing lateral displacement of the two parts of the handle.

0 denotes the blades which are preferably made in three sizes, as shownin the drawings. The blades are all provided with tan gs 5, havingopenings 6 through them. The edges of the tangs are beveled, as at 7, toengage the undercut ways in part A of the handle, the inner ends of thetangs being provided with rounded bevels 8, the purpose of which willpresently be fully explained.

9 denotes a bevel-nosed catch at the forward end of a lever 10, pivotedin a hub 11 on the inner side of part A of the handle. At the other endof the lever is a finger-piece 12, which extends through an opening 13in part B of the handle, the outer side of said opening beingcountersunk, as at 13 (see Figs. 1 and 5,) so as to permit the operatorto move the finger-piece freely, while at the same time the finger-pieceshall not project beyond the surface of the han le. In practiceImake thecountersink of suitable shape to permit the thumb-nail to be used topush in the finger-piece, the nail passing into the angular portions,which are clearly shown in Fig. 1. Catch 9 is held in the engagingposition and thefinger-piece in a position to be engaged by the fingerby means of a spring 14, one end of which bears against the lever, theother; against part A on the handle, the ends of the spring beingsecured to lugs 15 upon the lever and the handle. Gross-piece 3 in partB of the handle is provided with a groove 16, in which the lever movesfreely.

The operation in use will be clearly understood fromFigs. 2 and 5. Toremove ablade, the operator pushes the finger downward, which liftscatch 9 out of the opening 6 in the tang of the blade and permits theblade to be readily withdrawn. Blades are inserted by simply pushingthem inward to place, the rounded bevel 8 at the base of the tangengaging the bevel-nosed catch,raisingthe catch, and permitting theblade to slide under it until the catch reaches opening 6 in the tang,into which it will be instantly forced by the spring, the inner edge ofthe catch being a straight wall, which engages the side of the openingand locks the blade in position against the possibility of removal untilthe lever is operated by pushing in the fingerpiece.

Having thus described my invention, I claim- The combination, with ablade, the tang of which is provided with an opening through it and isbeveled at its sides and base, of a two-part handle, one part of whichis provided with an undercut socket to receive the han-

